Knife sharpener

ABSTRACT

This device consist of a pair of parallel legs which are held together by bar means so that an edge of the legs will slide on top of a box holding a sharpening stone, a V-shaped knotch in the legs, serving as rest means for the blade of the knife so that it may be sharpened at correct angle for obtaining the sharpness edge.

United States Patent [191 Sykes [451 May 13, 1975 1 1 KNIFE SHARPENER[76] lnventor: C. S. Sykes, PO. Box 12573, Fort Worth, Tex. 76116 [22]Filed: Dec. 20, 1973 21 Appl. No: 426,805

{52] US. Cl 1. 51/157; 51/214 [51] Int. Cl. B24b 3/36 [58] Field ofSearch 51/157, 158, 214

[56] References Cited UNITED STATES PATENTS 471,679 3/1892 Spruce 51/1581,130,695 3/1915 Allen 51/157 X 1,182,440 5/1916 Wyekoff 51/157 X2,131,626 9/1938 Keith 51/158 2,326,626 8/1943 Duncan 1. 51/2142,370,908 3/1945 Llorens 2,644,279 7/1953 Stankovich 2,652,667 9/1953Arnold 51/214 Primary ExaminerHarold D. Whitehead Attorney, Agent, orFirmWoff0rd, Felsman, Fails & Zobal [57] ABSTRACT This device consist ofa pair of parallel legs which are held together by bar means so that anedge of the legs will slide on top of a box holding a sharpening stone,a V-shaped knotch in the legs, serving as rest means for the blade ofthe knife so that it may be sharpened at correct angle for obtaining thesharpness edge.

2 Claims, 2 Drawing Figures KNIFE SHARPENER This invention relates toblade sharpening devices, and more particularly to a knife sharpenerdevice for use with a stone.

It is therefore the principal object of this invention to provide aknife sharpener device which enable a knife to be sharpened manuallywhile keep the blade at the correct angle for obtaining the sharpessedge thereon.

Another object of this invention is to provide a knife sharpener devicewhich will have parallel spaced leg members which may be glided alongthe top of the box holding the stone, the legs being secured together bybar means which serve as handle grip means for manipulating the devicewhile the blade is carried thereon.

Another object of this invention is to provide a sharpener device of thetype described, which will have an angularly disposed edge on the legswhich will terminate as a V-shaped slot, the slot serving as positioningmeans for the edge of the knife so as to obtain the correct angle whenthe device is slid over the sharpening stone.

A further object of this invention is to provide a sharpener device ofthe type described, of which the leg portion serve as guide means alongthe longitudinal sides of the stone that the knife is to be sharpenedon.

Other objects of the invention are to provide a knife sharpener which issimple in design, inexpensive to manufacture, rugged in construction,easy to use and efficient in operation.

These and other objects will be readily evident upon a study of thefollowing specification and the accompanying drawing, wherein:

FIG. 1 is a prespective view of the present invention shown in positionover a sharpening stone;

FIG. 2 is a prespective view of the device shown removed from the stone.

According to this invention, a knife sharpener 10 is shown to include apair of parallel spaced apart legs 11 having a projection 12 betweenwhich is secured a cylindrical bar 13 by means of suitable fasteners 14.

An edge 14a of legs 11, provides for sliding engagement with the topsurface 15 of the box 16 carrying the stone 17.

It shall be noted that a rubber pad 18 is secured fixedly by suitablemeans, at each end, to the bottom of the box 16 so as to providefrictional engagement with a surface, thus preventing movement of box 16when sharpening a knife blade.

At the upper portion of sharpener device 10 is a V- shaped slot 19 ineach of the legs 11 which in conjunction with edge 20 of legs 11,provides for the correct angular placement of the blade of the knife, soas to enable the blade edge to be at the proper angle for producing thesharpess edge possible.

It shall further be noted that the edge 20 of the legs 11, is angularlydisposed to the bottom edge 14a so as to provide correct angular restmean for the blade side.

When using, the operator places the knife so that the edge resides inthe slot 19 of the legs 11. With one hand the operator grasp the bar 13and pulls it from one end of stone 17, to the other, as the aforementioned is being accomplished, the other hand of the user, draws theknife out of the slots 19 while simultaneously keeping the blade againstthe sloping edge 20 of legs 11. When the device 10 is pulled all the wayto the end of stone 17, it is then pushed back to the opposite end ofstone l7 and the edge of the blade is again placed in the slots 19 andthe afore mentioned process is repeated.

In order to sharpen the opposite side of the blade, the process isreversed by picking upsthe device 10 and turning it around, the resultbeing, that the same angle of bevel is placed on both sides of theblade, resulting in a smooth keen edge on the knife blade.

What I now claim is:

l. A knife sharpening device comprising:

a sharpening stone having a generally fiat top sharp ening surface and agiven length and width with elongated parallel sides defining the widththereof,

support structure for supporting said stone and having a width andlength greater than the width and length respectively of said stone,

said support structure being adapted to support said stone in a positionto locate the sides defining the width and length of said stone inwardof the sides defining the width and length of said support structure andto locate said top sharpening surface of said stone above the topsurface of said support structure,

the top surfaces of said support structure on the elongated sides ofsaid stone being generally parallel with each other and with the topsharpening surface of said stone,

a pair of leg members having straight bottom edges for slidably engagingthe top surfaces of said support structure on the elongated sides ofsaid stone,

said leg members each having first and second portions comprising agenerally circular edge and a generally straight and oblique edgerespectively adapted to extend above the top surface of said stone whentheir bottom edges engage the top surfaces of said support structure onthe elongated sides of said stone,

said generally circular edge and said generally straight and obliqueedge of each leg member meet to form a generally V-shaped groove,

said generally straight and oblique edges defining acute angles relativeto lines parallel to the bottom edges of said leg members respectively,

a cylindrical member having opposite ends connected to said firstportions of said leg members respectively for spacing said leg membersapart in generally parallel relationship with each other,

said cylindrical member being connected to said first portions atpositions to have its surface generally flush with said circular edgesof said first portions of said leg members,

said cylindrical member having a length such that said leg members maystraddle the width of said stone to allow the bottom edges of said legmembers to slidably engage said top surfaces of said support structureon the elongated sides of said stone,

said cylindrical member being connected to said first portions of saidleg members at positions to allow said cylindrical member to be locatedabove the top surface of said stone whereby said leg members may be slidalong the length of said top surfaces of said support member on theelongated sides of said stone to move said cylindrical member above thetop surface of said stone,

said V-shaped grooves of said leg members being adapted to receive theblade edge of a knife to allow it to be sharpened by said stone,

3 4 said two leg members with said cylindrical member rubber pad meanslocated on the bottom of said sup- Connected therebetween bemg adaptedto be port structure to provide frictional engagementwith a moved fromsaid support structure by lifting upa ward and to be located in reversepositions relative to said support structure and said stone. 5 blade- 2.The knife sharpening device of claim 1 comprising surface when saiddevice is used to sharpen a knife j

1. A knife sharpening device comprising: a sharpening stone having agenerally flat top sharpening surface and a given length and width withelongated parallel sides defining the width thereof, support structurefor supporting said stone and having a width and length greater than thewidth and length respectively of said stone, said support structurebeing adapted to support said stone in a position to locate the sidesdefining the width and length of said stone inward of the sides definingthe width and length of said support structure and to locate said topsharpening surface of said stone above the top surface of said supportstructure, the top surfaces of said support structure on the elongatedsides of said stone being generally parallel with each other and withthe top sharpening surface of said stone, a pair of leg members havingstraight bottom edges for slidably engaging the top surfaces of saidsupport structure on the elongated sides of said stone, said leg memberseach having first and second portions comprising a generally circularedge and a generally straight and oblique edge respectively adapted toextend above the top surface of said stone when their bottom edgesengage the top surfaces of said support structure on the elongated sidesof said stone, said generally circular edge and said generally straightand oblique edge of each leg member meet to form a generally Vshapedgroove, said generally straight and oblique edges defining acute anglesrelative to lines parallel to the bottom edges of said leg membersrespectively, a cylindrical member having opposite ends connected tosaid first portions of said leg members respectively for spacing saidleg members apart in generally parallel relationship with each other,said cylindrical member being connected to said first portions atpositions to have its surface generally flush with said circular edgesof said first portions of said leg members, said cylindrical memberhaving a length such that said leg members may straddle the width ofsaid stone to allow the bottom edges of said leg members to slidablyengage said top surfaces of said support structure on the elongatedsides of said stone, said cylindrical member being connected to saidfirst portions of said leg members at positions to allow saidcylindrical member to be located above the top surface of said stonewhereby said leg members may be slid along the length of said topsurfaces of said support member on the elongated sides of said stone tomove said cylindrical member above the top surface of said stone, saidV-shaped grooves of said leg members being adapted to receive the bladeedge of a knife to allow it to be sharpened by said stone, said two legmembers with said cylindrical member connected therebetween beingadapted to be removed from said support structure by lifting upward andto be located in reverse positions relative to said support structureand said stone.
 2. The knife sharpening device of claim 1 comprisingrubber pad means located on the bottom of said support structure toprovide frictional engagement with a surface when said device is used tosharpen a knife blade.